Very good mod!
Ships are well balanced with nothing really standing out to be too strong or weak. The weapons (and kassadar design in general, ships too!) are the best part of this mod in my opinion, they are absolutely gorgeous. They feel powerful. The colours, the projectiles, the firing animations, projectile and missile trails, the little puffs of smoke or whatever it is that come out when a weapon is fired. Everything looks so good.
The only critique I have is for these two things:
1. Forced overdrive. This might be just a little bit strong. It looks cool as heck though.
2. the Renki. On paper this ship looks like a good support ship for missile fleets. In practise though it doesn't really seem to know how to use its ship system (It should probably be on all the time) it also likes to wander off too far even with escort orders, so that ships it's meant to support aren't even close enough to benefit from it's system.